Use of Glycol in Chiller system

Glycol releases and absorbs huge amount of heat without changing system’s temperature and hence finds its association with chiller system, for process cooling and heating applications. Water, as a coolant, in chillers, possess several kinds of issues such as scaling, corrosion and algal growth. As per this, if glycol is added in water, and pumped through the pipes of a glycol chiller, it manages to slow the freezing rate, even inhibiting bacterial growth within. Glycol is an organic water-miscible antifreeze liquid that is used as a heat transfer fluid which draws away heat, and allows the engine to operate efficiently, with lesser malfunctions and damages to its parts.

Chiller cooling system provides consistent pressure and temperature to industrial process to ensure highest quality. Owing to the antifreeze property of glycol, it can help cool the worts below boiling temperature in order to complete water condensation. Basically, only using water creates issues like rusting, algae growth, which effects the longevity of the machine. Water impurities mainly effects chamber of chiller system an irrupt water flow within the machine. In about 35% of Glycol needs to be added with water to increase the productivity of the chiller machine. So, adding glycol along with water ensures more heat transfer capability and low freezing point. The glycol solution (Glycol + Water) helps to prevent bursting and freezing in cooling system, however there are some extents in concentration. For most chiller applications, mixture of inhibited Propylene glycol and water, formulated for HVAC cooling system is always recommended. As inhibited propylene glycol consists of pipe lubricants and inhibitors in order to enhance heat exchange

What is glycol used for

There are two Glycol chiller types, such as Ethylene and propylene chillers, which used in chiller machine through HVAC system, as per different perspectives. Both are standard and ideal to use. Ethylene Glycol has more desirable physical proper ties, specially at lower temperatures. It also possesses superior heat transfer properties due to high boiling point and viscosity. On the other hand, Propylene glycol posses less temperature, contain corrosion inhibitors to enhance heat exchange. Its pH and toxicity are low, so basically Propylene Glycol used in food industry, beer manufacturing, cold shortages and other manufacturing units. Ethylene Glycol has been used in industrial water-cooling system (pharmaceutical industry, cold rolling mills, vegetable oil manufacture and other F&B industry) for its indirect cooling application. Besides this, glycol is anti-oxidising element which needs inhibitors to prevent for long time. Ethylene Glycol is more toxic than Propylene, so it needs to be handled safely.

Working mechanism

Glycol water coolant mixture from a refrigeration unit in a Glycol chiller funnel linked with thermal heat exchanger piping. It absorbs heat from industrial process, and then warmed the coolant. Theses warmed coolant hence return to refrigeration unit in order to repeat cooling process.

Chemtex is an efficient supplier of both Ethylene and Propylene Glycol in all over India. It also sells various inhibitors and chemical for other application.

For more details, please visit https://www.chemtexltd.com/products-and-solutions/heat-transfer-fluid/glycol-antifreeze/. For other information, contact us at info@chemtexltd.com.

The name Chemtex depicts Chemical Technology Experts. The early 1970s saw the foundation of Chemtex. And in the following decades, it expanded with its variety of indigenous chemicals and industries catered.